Über Buellia saxorum und verwandte Flechtenarten. 343 
Sporae 4—8 in ascis clavatis, 11—17 u Ig., 6—9 u lt. Hyme- 
nium J ope bene et fere permanenter coerulescit. Hypothecium et 
excipulum KHO tract. solutionem luteam effundunt. 
Pyenides supra atrae, immersae, apice nigro denudatae, par- 
vae, ad 015 mm alt. et 012 mm crass., simplices vel subeompositae. 
Conidia recta pl. m. bicuspidata, 6—-9(—10) u Ig., ad L2u lt. vel 
tenwiora. 
Esxobasidia mediocriter elongata fuleris brevibus parum sep- 
tatis, ramosis insident; endobasidia rare visa (Oliv. 59), non ex- 
clusa. Fulera sterilia, simplicia, brevia, crasse clavata in Anzi, 
Etr. 31. 
Buellia saxorum 
Mass., Ricerche (1852), p. 82. — Arld., Fl., 1872, S. 290, except. 
eit. exsicc. Rab. 510, Krb. 166; addit. autem: Hepp 752, Malbr. 
240 et Anzi 5l, cujus thallus KHO adh. non rubet. 
Lecidea saxorum: Hepp, Exs. Nr. 752. — Leight., Lich. Fl. Gr. 
Br., ed. 1 (1871), p. 302; ed. 3 (1879), p. 314. — Hue, Bull. 
Soc. bot. Fr., Vol. XLVI (1899), p. LXXXI. 
Duellia superans: Manguillon, Cat. Lich. Sarthe in Bull. Acad. 
internat. Geogr., Bot., Vol. IX (1900), p. 207. — Oliv., Expos. 
oyst. Lich.‘W. et N. W. Fr., Pr. II, Fasc. 2 (1901), p.. 146. — 
Oliv., Lich. Pyr. Orient. in Bull. Acad. internat. Geogr., Bot., 
Vol. XII (1903), p. 175. 
Lecidea superans: Nyl., Fl., 1873, p. 72. — Richard, Lich. d. 
Deux-Sevres in Mem. Soe. Statist. Seien. Art. d. Deux-Sevres, 
1877 (Sep. p. 39). — Hue, Add., Pr. II (1888), p. 225. — 
Nyl., Pyr. Or. Obs. Nov. (1891), p. 10 et 64. — Hue, Lich. 
Canisy in Journ. Bot., Vol. VI (1892), p. 493. — Hue, Lich. 
Envir. Paris in Bull. Soc. Bot. Fr., XL (1893), p. 183 et Lich. 
Vire ete. in Bull. Soc. Linn. Normand., Ser. 4, Vol. 8, Fase. 3 
(1595), Sep. p. 30. — Nyl., Lich. Envir. Paris, 1896, p. 98. 
Buellia leptocline: Massal., Geneac. (1854), p. 20. — Krb., Syst. 
Lich. Germ. (1555), p. 255 p. p. (excl. B. leptocline Flot.). — 
Anzi, Manip. in Comment. soe. critt. Ital., 1862, p. 158. — 
Arld., Fl., 1868, p. 246 sec. eit. exsiee. — Baglietto, Prosp. 
